99401

Properties

Appears in sequences

• Reverse digits of largest primes, append to sequence if result is larger prime then previous one with reverse digits.at n=25A098922
• Reverse digits of largest Chen primes, append to sequence if result is larger Chen prime then previous one with reverse digits.at n=20A118496
• Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 3,2 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.at n=7A155270
• a(1)=a(2)=a(3)=1. a(n) = reverseDigits(a(n-1)+a(n-2)+a(n-3)) for n>=4.at n=12A163550
• Total number of positive integers below 10^n requiring exactly 5 positive biquadrates in their representation as sum of biquadrates.at n=5A186655
• Primes of the form 5*k^2 - 4.at n=31A201786
• Primes using all the square digits {0, 1, 4, 9} and no others.at n=14A331346
• Prime numbersat n=9541